Method for preparing Fe3+doped TiO2 hollow sphere catalyst and application thereof

A technology of hollow spheres and catalysts, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxides/metal hydroxide catalysts, etc., can solve the problems of no literature reports, etc., to improve utilization rate and reduce The effect of degradation cost and degradation efficiency improvement

Inactive Publication Date: 2010-11-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

About TiO 2 The use of hollow spheres in photocatalytic research has been reported [Wu Liangzhuan, Zhi Jinfang, one-step synthesis of anatase-type titanium dioxide hollow spheres in aqueous phase Acta Physicochemical Sinica. 2007, 23(8): 1173-1177], and Fe 3+ doped TiO 2 Nanoparticles [Lifeng Cui, YuanshengWang, MutongNiu, GuoxinChen, YaoCheng. Synthesis and visible light photocatalysis of Fe-dopedTiO 2 mesoporous layers deposited on hollow glass microbeads. Journal of Solid State Chemistry 182 (2009) 2785-2790], Fe 3+ doped TiO 2 Nanobelt [Li Qiaoling, Zhao Jingxian, Li Baodong, Zhang Cunrui. Iron-doped TiO 2 The preparation and photocatalytic properties of microribs. Acta Chem. 2010, 68(5): 425-430], and their application in photocatalytic degradation research has been reported in the literature, but for Fe 3+ doped TiO 2 The preparation of hollow spheres and their photocatalytic degradation of cationic dyes have not been reported in the literature at home and abroad.

Method used

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  • Method for preparing Fe3+doped TiO2 hollow sphere catalyst and application thereof
  • Method for preparing Fe3+doped TiO2 hollow sphere catalyst and application thereof
  • Method for preparing Fe3+doped TiO2 hollow sphere catalyst and application thereof

Examples

Experimental program
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Effect test

example 1

[0022] 1) Weigh 0.00119g of ferric chloride hexahydrate into a three-necked flask with stirring, measure 30ml of absolute ethanol, and prepare an ethanol solution of ferric chloride. Then weigh 0.06g of nano-carbon spheres, the diameter of which is in the range of 100-200nm, add 0.3ml of distilled water into it, and ultrasonically disperse until evenly mixed.

[0023] 2) Add 30 ml of absolute ethanol into a dry constant pressure dropping funnel, measure 0.3 ml of n-butyl titanate and add it to prepare an ethanol solution of n-butyl titanate.

[0024] 3) Slowly add n-butyl titanate ethanol solution into the mixed solution obtained in step 1) under stirring condition, stir, and heat to reflux at 80° C. for 6 h. After the reflux is completed, continue to stir for 30 minutes, centrifuge, wash, and dry to obtain Fe 3+ Carbon / titania core-shell particles.

[0025] 4) with the Fe obtained in step 3) 3+ Doped carbon / titanium dioxide core-shell particles are burned in a mufur furnac...

example 2

[0028] 1) Weigh 0.00238g of ferric chloride hexahydrate into a three-necked flask with stirring, measure 50ml of absolute ethanol, and prepare an ethanol solution of ferric chloride. Then weigh 0.06g of nano-carbon spheres, the carbon spheres have a diameter ranging from 100 to 200nm, add 0.5ml of distilled water into it, and ultrasonically disperse until they are evenly mixed.

[0029] 2) Add 50 ml of absolute ethanol into a dry constant-pressure dropping funnel, measure 0.3 ml of n-butyl titanate and add it to prepare an ethanol solution of n-butyl titanate.

[0030] 3) Slowly add n-butyl titanate ethanol solution into the mixed solution obtained in step 1) under stirring condition, stir, and heat to reflux at 80° C. for 6 h. After the reflux is completed, continue to stir for 30 minutes, centrifuge, wash, and dry to obtain Fe 3+ Doped carbon / titania core-shell particles.

[0031] 4) with the Fe obtained in step 3) 3+ Fe 3+ Doped TiO 2 Open or closed hollow sphere photo...

example 3

[0034] 1) Weigh 0.0119g of ferric chloride hexahydrate into a three-necked flask with stirring, measure 80ml of absolute ethanol, and prepare an ethanol solution of ferric chloride. Then weigh 0.6g of nano-carbon spheres, the diameter of which is in the range of 100-200nm, add 3ml of distilled water into it, and ultrasonically disperse until uniformly mixed.

[0035] 2) Add 80 ml of absolute ethanol to a dry constant pressure dropping funnel, measure 3 ml of n-butyl titanate and add it to prepare an ethanol solution of n-butyl titanate.

[0036] 3) Slowly add n-butyl titanate ethanol solution into the mixed solution obtained in step 1) under stirring condition, stir, and heat to reflux at 90° C. for 5 h. After the reflux is completed, continue to stir for 2 hours, centrifuge, wash, and dry to obtain Fe 3+ Doped carbon / titania core-shell particles.

[0037] 4) with the Fe obtained in step 3) 3+ Fe 3+ Doped TiO 2 Open or closed hollow sphere photocatalyst, wherein Fe / Ti mol...

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Abstract

The invention discloses a method for preparing a novel Fe3+-doped TiO2 opened-port or closed-port hollow sphere composite catalyst, which comprises the following steps of: preparing a Fe3+-doped carbon/titanium dioxide nuclear shell particle by using a template method-hydrolysis cladding method and calcining for 2-4h at certain temperature to obtain the Fe3+-doped TiO2 opened-port or closed-port hollow sphere composite catalyst. The method can be applied to solar visible light catalytic degradation cation blue dye solution. In the invention, the Fe3+-doped TiO2 composite hollow sphere is prepared from ferric sources, titanium sources and carbon spheres with low cost, thereby the invention has the advantages of no pollution caused by used raw materials, simple process of method, no pollutant emission in the preparation process, short preparation period, less energy consumption and low cost, and can realize scale preparation, and the invention belongs to the green synthesis technology. A light absorption side of the composite light catalyst carries out red shift to a visible light region after the doping of Fe3+, so that the utilization ratio of the solar visible light is improved and the degradation efficiency under the visible light is greatly improved.

Description

technical field [0001] The invention belongs to the preparation of nano composite material and its application in the field of environmental protection. Specifically refers to the preparation of Fe by ultrasonic hydrolysis coating method using nano-carbon spheres, n-butyl titanate and ferric chloride hexahydrate as the main raw materials. 3+ Doped carbon / titania core-shell particles, calcined to prepare Fe 3+ doped TiO 2 The composite photocatalyst of open or closed hollow spheres is used in the research of photocatalytic degradation of cationic dye wastewater. Background technique [0002] Research on semiconductor photocatalysis is a frontier subject in the field of materials and chemistry, and has broad application prospects in new energy and environmental purification. The widely studied semiconductor photocatalysts are CdS, SnO 2 、TiO 2 , ZnO, ZnS, PbS, MoO 3 , SrTiO 3 and V 2 o 5 etc. Among these semiconductors, TiO 2 It is a photocatalyst with the most appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J35/08C02F1/30
CPCY02W10/37
Inventor 蒋银花张文莉张蓉仙倪良燕云吴小黎
Owner JIANGSU UNIV
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